Dtc P2009 Intake Manifold Runner Control Circuit Low (Bank 1)

Lexus IS250 IS220d GSE20 ALE20 4GR-FSE ENGINE CONTROL SYSTEM

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT INTAKE MANIFOLD (SCV OPERATION)

CHECK HARNESS AND CONNECTOR (ECM - SCV)

CHECK WHETHER DTC OUTPUT RECURS (DTC P2009 OR P2010)

DTC P2009 Intake Manifold Runner Control Circuit Low (Bank 1)

DTC P2010 Intake Manifold Runner Control Circuit High (Bank 1)

DESCRIPTION

The ECM activates the DC motor for Swirl Control Valve (SCV), which opens and closes SCV. The ECM activates the DC motor based on engine rpm, coolant temperature, engine load signals and other conditions. When the voltage of the DC motor deviates from the standard range, the ECM determines that a malfunction has occurred and outputs a DTC.

DTC No.DTC Detection ConditionTrouble Area
P2009
P2010		Conditions (a) and (b) continue for 0.5 seconds (1 trip detection logic):
(a) DC motor for SCV output duty is 100 %
(b) DC motor for SCV current is less than 0.35 A
Open or short in DC motor for SCV circuit
Intake manifold (DC motor for SCV)
ECM

WIRING DIAGRAM

Dtc P2009 Intake Manifold Runner Control Circuit Low (Bank 1). 4GR-FSE ENGINE CONTROL SYSTEM. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

  • HINT:
  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred .
1.INSPECT INTAKE MANIFOLD (SCV OPERATION)

Inspect the swirl control valve .

NG
REPLACE INTAKE MANIFOLD
OK
2.CHECK HARNESS AND CONNECTOR (ECM - SCV)
Dtc P2009 Intake Manifold Runner Control Circuit Low (Bank 1). 4GR-FSE ENGINE CONTROL SYSTEM. Lexus IS250 IS220d GSE20 ALE20

Disconnect the E6 ECM connector.

Disconnect the E53 DC motor for SCV connector.

Measure the resistance of the wire harness side connectors.

  • Standard resistance (Check for open):
  • Tester ConnectionSpecified Condition
    IA1- (E6-1) - E53-2Below 1 Ω
    IA1+ (E6-2) - E53-1Below 1 Ω
  • Standard resistance (Check for short):
  • Tester ConnectionSpecified Condition
    IA1- (E6-1) or E53-2 - Body ground10 kΩ or higher
    IA1+ (E6-2) or E53-1 - body ground10 kΩ or higher

Reconnect the ECM connector.

Reconnect the DC motor for SCV connector.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
3.CHECK WHETHER DTC OUTPUT RECURS (DTC P2009 OR P2010)

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Turn the tester ON.

Clear DTCs.

Enter the following menus: Power train / Engine / DTC.

Read DTCs.

  • Result:
  • Display (DTC Output)Proceed to
    P2009 or P2010A
    No DTCB
B
CHECK FOR INTERMITTENT PROBLEMS
A
REPLACE ECM